This reptiliomorpha fossil was on display at the American Museum of Natural History (AMNH) in New York City in July 2018. The fossil was named Diadectes phaseolinus (Cope, 1880). According to GBIF (Global Biodiversity Information Facility), the accepted name for this fossil is Diadectes sideropelicus (Cope, 1878). The name means "crosswise biter". It was found in 1906 at Godlin Creek, Archer County Texas USA and dates to the early Permian Period (280 million years ago). Accession number is AMNH 4684.
E.C. Case mentions this specimen in his 1910 Article XVII New or Little Known Reptiles and Amphibians from the Permian (?) of Texas pp. 163-181 in Bulletin American Museum of Natural History Vol. XXVIII.
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